Symbols & Numbers | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

## Index: Symbols & Numbers

### Symbols

{ } (braces)
  \{ \} regular expression metacharacters: 32.11. Regular Expressions: Matching a Specific Number of Sets with \ { and \ } (Unix Power Tools)
    32.20. Valid Metacharacters for Different Unix Programs (Unix Power Tools)
  awk procedures, enclosing: 20.10.2.1. Patterns (Unix Power Tools)
  dereferencing, use in: 41.5.4. References (Unix Power Tools)
  filename wildcards: 33.2. Filename Wildcards in a Nutshell (Unix Power Tools)
  find command: 9.9. Running Commands on What You Find (Unix Power Tools)
    9.17. Duplicating a Directory Tree (Unix Power Tools)
  GNU find command and: 9.9. Running Commands on What You Find (Unix Power Tools)
  in shells: 1.13. Wildcards (Unix Power Tools)
    33.3. Who Handles Wildcards? (Unix Power Tools)
  pattern-expansion characters
    building strings with: 28.4. Build Strings with { } (Unix Power Tools)
    for loop, using with: 28.9.2. A for Loop (Unix Power Tools)
    foreach loop, using with: 28.9.1. A foreach Loop (Unix Power Tools)
  quoting alias argument in: 29.3. C-Shell Aliases with Command-Line Arguments (Unix Power Tools)
  sed commands enclosed in: 34.20. Making Edits Everywhere Except... (Unix Power Tools)
  shell functions, using in: 29.11.2. Functions with Loops: Internet Lookup (Unix Power Tools)
  variable values, interpolating: 35.3. What Environment Variables Are Good For (Unix Power Tools)
[ ] (brackets)
  [^ ] filename wildcard: 33.2. Filename Wildcards in a Nutshell (Unix Power Tools)
  [ command: 35.26. test: Testing Files and Strings (Unix Power Tools)
    numeric tests, syntax errors: 37.3. Stop Syntax Errors in Numeric Tests (Unix Power Tools)
    string text syntax errors: 37.4. Stop Syntax Errors in String Tests (Unix Power Tools)
  bash shell prompts, nonprinting characters: 4.10. Highlighting and Color in Shell Prompts (Unix Power Tools)
  range operator: 21.11. Hacking on Characters with tr (Unix Power Tools)
  references to lists in Perl: 41.5.4. References (Unix Power Tools)
  regular expression metacharacters: 32.20. Valid Metacharacters for Different Unix Programs (Unix Power Tools)
    ^ (caret) within: 32.9. Regular Expressions: Exceptions in a Character Set (Unix Power Tools)
    character classes: 41.7. Perl Boot Camp, Part 4: Pattern Matching (Unix Power Tools)
    range, specifying: 32.8. Regular Expressions: Specifying a Range of Characters with [...] (Unix Power Tools)
  wildcards: 28.3. Use Wildcards to Create Files? (Unix Power Tools)
    33.2. Filename Wildcards in a Nutshell (Unix Power Tools)
    fast find commands, using with: 9.19. Wildcards with "Fast find" Database (Unix Power Tools)
{ } (curly braces): 4.2.2. More on Variable Syntax (Learning the Korn Shell)
( ) (parentheses)
  ((...)) for arithmetic expressions: 6.2.2. Arithmetic Conditionals (Learning the Korn Shell)
  enclosing arithmetic expressions: 6.2. Numeric Variables and Arithmetic (Learning the Korn Shell)
  for subshells: 8.6.2. Subshells (Learning the Korn Shell)
[ ] (square brackets): 4.5.2.3. Korn shell versus awk/egrep regular expressions (Learning the Korn Shell)
  [[...]] for comparison tests: 5.1.4. Condition Tests (Learning the Korn Shell)
  [...] for condition tests (old syntax): 5.1.4. Condition Tests (Learning the Korn Shell)
    5.1.4.1. String comparisons (Learning the Korn Shell)
  set construct wildcards and: 1.6.2. Filenames and Wildcards (Learning the Korn Shell)
* (asterisk)
  *** filename wildcard (zsh): 33.2. Filename Wildcards in a Nutshell (Unix Power Tools)
  arithmetic operator (multiplication): 36.21.1. Syntax (Unix Power Tools)
  ** (exponentiation) operator: 7.6. Expressions (sed & awk)
  **= (assignment) operator: 7.6. Expressions (sed & awk)
  *= (assignment) operator: 7.6. Expressions (sed & awk)
  executable files and: 3.1.8. Listing Files with ls (Learning Unix)
  executable files, denoting in ls -F listings: 8.10. Useful ls Aliases (Unix Power Tools)
  filename metacharacter: 4.2.2. Filename Metacharacters (Unix in a Nutshell)
    4.2.2. Filename Metacharacters (Unix in a Nutshell)
  filename wildcard: 33.2. Filename Wildcards in a Nutshell (Unix Power Tools)
    33.2. Filename Wildcards in a Nutshell (Unix Power Tools)
  metacharacter: 6.3.1. Search Patterns (Unix in a Nutshell)
  multiplication operator: 7.6. Expressions (sed & awk)
    4.4.1. Operators (Unix in a Nutshell)
    5.4.1.2. Arithmetic operators (Unix in a Nutshell)
    11.5. Operators (Unix in a Nutshell)
    41.5.1. Scalars (Unix Power Tools)
  regular expression metacharacter: 32.3. Understanding Expressions (Unix Power Tools)
    32.4. Using Metacharacters in Regular Expressions (Unix Power Tools)
    quantifier in Perl: 41.7. Perl Boot Camp, Part 4: Pattern Matching (Unix Power Tools)
    repeating character sets with: 32.10. Regular Expressions: Repeating Character Sets with * (Unix Power Tools)
    use in Unix programs: 32.20. Valid Metacharacters for Different Unix Programs (Unix Power Tools)
  shell metacharacter: 32.3. Understanding Expressions (Unix Power Tools)
  wildcard character: 1.13. Wildcards (Unix Power Tools)
    9.19. Wildcards with "Fast find" Database (Unix Power Tools)
  wildcards: 3.3.3. Setting Permissions with chmod (Learning Unix)
    4.2. File and Directory Wildcards (Learning Unix)
    4.4.5.1. rm (Learning Unix)
  ** exponentiation operator: 11.5. Operators (Unix in a Nutshell)
  *= assignment operator: 4.4.1. Operators (Unix in a Nutshell)
    5.4.1.1. Assignment operators (Unix in a Nutshell)
    11.5. Operators (Unix in a Nutshell)
@ (at sign)
  as built-in variable: 4.2.1. Positional Parameters (Learning the Korn Shell)
    as default list in for statement: 5.2. for (Learning the Korn Shell)
    as default list in select statement: 5.4. select (Learning the Korn Shell)
  as regular expression operator: 4.5.2.1. Regular expression basics (Learning the Korn Shell)
    4.5.2.3. Korn shell versus awk/egrep regular expressions (Learning the Korn Shell)
  for accessing entire array: 6.4.1. Indexed Arrays (Learning the Korn Shell)
  for preserving whitespace: 6.4.1. Indexed Arrays (Learning the Korn Shell)
` (backquotes)
  \` \`, nested command substitution: 36.24. Nested Command Substitution (Unix Power Tools)
  arguments, reading: 28.17. Dealing with Too Many Arguments (Unix Power Tools)
  capturing command output in an array: 41.7. Perl Boot Camp, Part 4: Pattern Matching (Unix Power Tools)
  command substitution operators: 5.3. Setting the Terminal Type When You Log In (Unix Power Tools)
    8.17. Picking a Unique Filename Automatically (Unix Power Tools)
    28.14. Command Substitution (Unix Power Tools)
    excluding files from deletion: 14.18. Removing Every File but One (Unix Power Tools)
    getopt, using with: 35.24. Standard Command-Line Parsing (Unix Power Tools)
    nesting: 28.14. Command Substitution (Unix Power Tools)
  command substitution with: 9.2. Delving Through a Deep Directory Tree (Unix Power Tools)
  expr command, running with: 36.22. Testing Characters in a String with expr (Unix Power Tools)
  for loops combined with: 36.11. Standard Input to a for Loop (Unix Power Tools)
  quoting in Bourne shell: 27.12.2. How Quoting Works (Unix Power Tools)
  redirecting standard output: 36.16. n>&m: Swap Standard Output and Standard Error (Unix Power Tools)
\ backslash: 1.9.2. Backslash-Escaping (Learning the Korn Shell)
  as command: 2.4.6. Filename and Variable Completion and Expansion (Learning the Korn Shell)
\ (backspace), stripping from formatted manpages: 2.4. Searching Online Manual Pages (Unix Power Tools)
[] (bracket), as wildcards: 4.2. File and Directory Wildcards (Learning Unix)
^ (caret character): 2.3.4. Moving Around in the History File (Learning the Korn Shell)
  as bitwise operator: 6.2. Numeric Variables and Arithmetic (Learning the Korn Shell)
  as command: 2.4.1. Simple Control Mode Commands (Learning the Korn Shell)
  cutting or copying text in pico: 4.3.2.1. Pico tour (Learning Unix)
  matching beginning of line in regular expressions: 10.1. Installing the Korn Shell as the Standard Shell (Learning the Korn Shell)
: (colon)
  between item=attribute values: 8.6.2. Configuring It (Unix Power Tools)
  Bourne shell operator: 36.6. The Unappreciated Bourne Shell ":" Operator (Unix Power Tools)
    parameter substitution, use in: 36.7. Parameter Substitution (Unix Power Tools)
  command in vi: 17.2. What We Cover (Unix Power Tools)
    17.30. Setting Up vi with the .exrc File (Unix Power Tools)
  in command-line options: 35.24. Standard Command-Line Parsing (Unix Power Tools)
  ex commands, issuing from vi: 20.4. Useful ex Commands (Unix Power Tools)
  logical operator: 36.21.1. Syntax (Unix Power Tools)
    36.21.2. Examples (Unix Power Tools)
  as null character: 35.13. Test Exit Status with the if Statement (Unix Power Tools)
  :p operator, printing command without executing it: 30.11. Check Your History First with :p (Unix Power Tools)
  separating fields: 1.7. Which Shell Am I Running? (Unix Power Tools)
    5.6. Checklist: Terminal Hangs When I Log In (Unix Power Tools)
  separating terminal type values: 5.3. Setting the Terminal Type When You Log In (Unix Power Tools)
  shell script comments: 36.2. The Story of : # #! (Unix Power Tools)
  string editing operators: 28.5. String Editing (Colon) Operators (Unix Power Tools)
  translation table, event and action mappings: 6.4. X Event Translations (Unix Power Tools)
: (colon) as a less prompt: 3.2. Looking Inside Files with less (Learning Unix)
, (comma), as command: 2.4.5. Character-Finding Commands (Learning the Korn Shell)
, (comma) in filenames: 1.11. Filenames (Unix Power Tools)
- (dash)
  command-line arguments starting with: 35.22. Handling Arguments with while and shift (Unix Power Tools)
    35.24. Standard Command-Line Parsing (Unix Power Tools)
  filenames starting with: 14.13. Handling a Filename Starting with a Dash (-) (Unix Power Tools)
  subtraction arithmetic operator: 36.21.1. Syntax (Unix Power Tools)
$ (dollar sign)
  $((...)): 6.2. Numeric Variables and Arithmetic (Learning the Korn Shell)
  $@/$* variables: 4.2.1. Positional Parameters (Learning the Korn Shell)
  as built-in variable: 2.2. The History File (Learning the Korn Shell)
    8.4.2. Process ID Variables and Temporary Files (Learning the Korn Shell)
  as command: 2.4.1. Simple Control Mode Commands (Learning the Korn Shell)
  as pattern-substitution operator: 4.5.4. Pattern Substitution Operators (Learning the Korn Shell)
  as variable name operator: 4.5.5. Variable Name Operators (Learning the Korn Shell)
$0, $1, $2, ...: 2.4.1. Running awk (sed & awk)
  7.5.1. Referencing and Separating Fields (sed & awk)
$ (dollar sign), as shell prompt: 1.1.2. Logging in Nongraphically (Learning Unix)
  1.1.5. The Shell Prompt (Learning Unix)
  2.2.3. C. Starting the Window Manager (Learning Unix)
. (dot)
  . and .. in directories: 10.2. What's Really in a Directory? (Unix Power Tools)
    10.4.2. Links to a Directory (Unix Power Tools)
  . and .. in pathnames: 1.16. Making Pathnames (Unix Power Tools)
  . command, reading files with: 35.29. Reading Files with the . and source Commands (Unix Power Tools)
  ./ (dot slash), filenames beginning with: 14.13. Handling a Filename Starting with a Dash (-) (Unix Power Tools)
  .. (integer-range) operator in zsh: 28.4. Build Strings with { } (Unix Power Tools)
  . (string concatenation) operator: 41.5.1. Scalars (Unix Power Tools)
  current line symbol (ex): 5.2.3. Line Addressing Symbols (Learning the vi Editor)
  directory shortcuts: 3.1.5.2. Relative pathnames up (Learning Unix)
    3.1.8. Listing Files with ls (Learning Unix)
    4.4.2.1. cp (Learning Unix)
  filenames beginning with: 14.16. Problems Deleting Directories (Unix Power Tools)
    ls command and: 8.9. Showing Hidden Files with ls -A and -a (Unix Power Tools)
    wildcards and: 33.2. Filename Wildcards in a Nutshell (Unix Power Tools)
  in filenames: 4.1. File and Directory Names (Learning Unix)
    1.11. Filenames (Unix Power Tools)
    1.13. Wildcards (Unix Power Tools)
  metacharacter: 6.3.1. Metacharacters Used in Search Patterns (Learning the vi Editor)
  regular expression metacharacter: 32.3. Understanding Expressions (Unix Power Tools)
    matching any character (except newline) in Perl: 41.7. Perl Boot Camp, Part 4: Pattern Matching (Unix Power Tools)
    matching any character with: 32.7. Regular Expressions: Match Any Character with . (Dot) (Unix Power Tools)
    use in Unix programs: 32.20. Valid Metacharacters for Different Unix Programs (Unix Power Tools)
  relative pathname for current directory: 31.3. What Good Is a Current Directory? (Unix Power Tools)
  repeat command: 2.3.8.1. Repeat (Learning the vi Editor)
    6.1. Confirming Substitutions (Learning the vi Editor)
  repeat command in vi editor: 17.7. Get Back What You Deleted with Numbered Buffers (Unix Power Tools)
  undo/redo (nvi): 9.8.3. Infinite Undo (Learning the vi Editor)
= equal sign: 7.2.3.3. Code blocks (Learning the Korn Shell)
  == string comparison operator: 5.1.4.1. String comparisons (Learning the Korn Shell)
  as command: 2.4.6. Filename and Variable Completion and Expansion (Learning the Korn Shell)
  as string comparison operator: 5.1.4.1. String comparisons (Learning the Korn Shell)
  as variable assignment operator: 3.4. Shell Variables (Learning the Korn Shell)
  operator: 3.3.3. Setting Permissions with chmod (Learning Unix)
! (exclamation point)
  != string comparison operator: 5.1.4.1. String comparisons (Learning the Korn Shell)
  as built-in variable: 8.4.2. Process ID Variables and Temporary Files (Learning the Korn Shell)
  as negation operator: 5.1.4.3. File attribute checking (Learning the Korn Shell)
    5.1.4.3. File attribute checking (Learning the Korn Shell)
  as regular expression operator: 4.5.2.1. Regular expression basics (Learning the Korn Shell)
    4.5.2.1. Regular expression basics (Learning the Korn Shell)
    4.5.2.3. Korn shell versus awk/egrep regular expressions (Learning the Korn Shell)
  indicating negation in character set: 1.6.2. Filenames and Wildcards (Learning the Korn Shell)
# for comments: 5.2. Comment (sed & awk)
  7.4.1. Describing Your Script (sed & awk)
  B.2.2.2. Comments (sed & awk)
  #n for suppressing output: 5.2. Comment (sed & awk)
#!, invoking awk with: 10.9. Invoking awk Using the #! Syntax (sed & awk)
  B.1.1. Shell Wrapper for Invoking awk (sed & awk)
< (input redirection operator): 5.1. Standard Input and Standard Output (Learning Unix)
> and >> (output redirection operator): 5.1. Standard Input and Standard Output (Learning Unix)
# (hash mark)
  ## pattern-matching operator: 4.5.3. Pattern-Matching Operators (Learning the Korn Shell)
    4.5.3. Pattern-Matching Operators (Learning the Korn Shell)
    6.2.3. Arithmetic Variables and Assignment (Learning the Korn Shell)
  as built-in variable: 4.2.1. Positional Parameters (Learning the Korn Shell)
  as command: 2.4.7. Miscellaneous Commands (Learning the Korn Shell)
  as pattern-matching operator: 4.5.3. Pattern-Matching Operators (Learning the Korn Shell)
    4.5.3. Pattern-Matching Operators (Learning the Korn Shell)
    4.7. Advanced Examples: pushd and popd (Learning the Korn Shell)
    5.5. while and until (Learning the Korn Shell)
  indicating comments: 4.5.1. Syntax of String Operators (Learning the Korn Shell)
  size of arrays and: 6.4.1. Indexed Arrays (Learning the Korn Shell)
- (hyphen) for command options: 1.2. Syntax of Unix Command Lines (Learning Unix)
- (minus sign): 3.3. Options (Learning the Korn Shell)
  8.4.4. Resetting Traps (Learning the Korn Shell)
  as command: 2.4.4. Moving Around in the History File (Learning the Korn Shell)
% (percent sign)
  %% pattern-matching operator: 4.5.3. Pattern-Matching Operators (Learning the Korn Shell)
    4.7. Advanced Examples: pushd and popd (Learning the Korn Shell)
    5.5. while and until (Learning the Korn Shell)
    5.5. while and until (Learning the Korn Shell)
    6.2.3. Arithmetic Variables and Assignment (Learning the Korn Shell)
  as command: 2.4.5. Character-Finding Commands (Learning the Korn Shell)
  as pattern-matching operator: 4.5.3. Pattern-Matching Operators (Learning the Korn Shell)
    4.5.3. Pattern-Matching Operators (Learning the Korn Shell)
    4.5.3. Pattern-Matching Operators (Learning the Korn Shell)
    5.2. for (Learning the Korn Shell)
    5.2. for (Learning the Korn Shell)
    5.3. case (Learning the Korn Shell)
  as shell prompt: 2.2.3. C. Starting the Window Manager (Learning Unix)
  specifying jobs: 8.2.1. Foreground and Background (Learning the Korn Shell)
    8.2.1. Foreground and Background (Learning the Korn Shell)
    8.3.2. kill (Learning the Korn Shell)
| pipe (see pipelines)
  1.7.3. Pipelines (Learning the Korn Shell)
  7.1. I/O Redirectors (Learning the Korn Shell)
  7.1. I/O Redirectors (Learning the Korn Shell)
  || for condition tests: 5.1.4.3. File attribute checking (Learning the Korn Shell)
  || for exit statuses: 5.1.2. Combinations of Exit Statuses (Learning the Korn Shell)
  |& for two-way pipes: 8.5.4. Coroutines with Two-Way Pipes (Learning the Korn Shell)
  as bitwise operator: 6.2. Numeric Variables and Arithmetic (Learning the Korn Shell)
  as case pattern separator: 5.3. case (Learning the Korn Shell)
| (pipe) for I/O redirection: 5.1. Standard Input and Standard Output (Learning Unix)
+ (plus sign): 3.3. Options (Learning the Korn Shell)
  as command: 2.4.4. Moving Around in the History File (Learning the Korn Shell)
  as regular expression operator: 4.5.2.1. Regular expression basics (Learning the Korn Shell)
    4.5.2.1. Regular expression basics (Learning the Korn Shell)
    4.5.2.3. Korn shell versus awk/egrep regular expressions (Learning the Korn Shell)
#! command: 4.9. Built-in Commands (Bourne and Korn Shells) (Unix in a Nutshell)
  5.8. Built-in C Shell Commands (Unix in a Nutshell)
# prompt: 3.5. NetInfo Utilities (Mac OS X for Unix Geeks)
? (question mark)
  as built-in variable: 5.1.1. Exit Status and Return (Learning the Korn Shell)
  as regular expression operator: 4.5.2.1. Regular expression basics (Learning the Korn Shell)
    4.5.2.1. Regular expression basics (Learning the Korn Shell)
    4.5.2.3. Korn shell versus awk/egrep regular expressions (Learning the Korn Shell)
  as wildcard: 1.6.2. Filenames and Wildcards (Learning the Korn Shell)
    4.5.2.3. Korn shell versus awk/egrep regular expressions (Learning the Korn Shell)
    4.2. File and Directory Wildcards (Learning Unix)
  using with ERR fake signal: 9.1.2.2. ERR (Learning the Korn Shell)
' (quotes, single)
  ; (semicolon), using with in C shell: 9.9. Running Commands on What You Find (Unix Power Tools)
  around filenames, renaming files and: 10.9. Renaming, Copying, or Comparing a Set of Files (Unix Power Tools)
  in alias quoting: 29.3. C-Shell Aliases with Command-Line Arguments (Unix Power Tools)
    29.4. Setting and Unsetting Bourne-Type Aliases (Unix Power Tools)
  in bash pre-prompt commands: 4.16. Preprompt, Pre-execution, and Periodic Commands (Unix Power Tools)
  in prompts: 4.2. Static Prompts (Unix Power Tools)
    4.7. Multiline Shell Prompts (Unix Power Tools)
    4.10. Highlighting and Color in Shell Prompts (Unix Power Tools)
  in shell quoting: 27.12. Bourne Shell Quoting (Unix Power Tools)
    27.12.2. How Quoting Works (Unix Power Tools)
    27.13. Differences Between Bourne and C Shell Quoting (Unix Power Tools)
    inside double quotes (C shell): 27.13.2. How Quoting Works (Unix Power Tools)
  passing wildcards to programs: 33.3. Who Handles Wildcards? (Unix Power Tools)
  regular expressions, quoting: 32.2. Don't Confuse Regular Expressions with Wildcards (Unix Power Tools)
  strings in case statements: 35.11. Pattern Matching in case Statements (Unix Power Tools)
; (semicolon): 2.3.1. Specifying Simple Instructions (sed & awk)
  2.4.1. Running awk (sed & awk)
  B.2.2.1. Line termination (sed & awk)
  background commands, running: 7.1. Running a Command in the Background (Learning Unix)
  code separator in color escape sequences: 8.6.1. Trying It (Unix Power Tools)
  command lines and: 1.2. Syntax of Unix Command Lines (Learning Unix)
  for line ranges (ex): 5.2.5. Redefining the Current Line Position (Learning the vi Editor)
  repeat search command: 3.3.2. Current Line Searches (Learning the vi Editor)
  separating awk procedures: 20.10.2.1. Patterns (Unix Power Tools)
  separating commands: 28.16. Separating Commands with Semicolons (Unix Power Tools)
    35.17. Trapping Exits Caused by Interrupts (Unix Power Tools)
    in case statements: 35.10. Test String Values with Bourne-Shell case (Unix Power Tools)
    find -exec and: 9.9. Running Commands on What You Find (Unix Power Tools)
  in shell functions: 29.11.1. Simple Functions: ls with Options (Unix Power Tools)
/ (slash)
  /* $Id $ */, commenting C program RCS files: 39.5. RCS Basics (Unix Power Tools)
  arithmetic operator (division): 36.21.1. Syntax (Unix Power Tools)
  [/, ]/ (matching) commands (vim): 11.10.2.3. Cursor motion commands for programming (Learning the vi Editor)
  directory, denoting in ls -F listings: 8.10. Useful ls Aliases (Unix Power Tools)
  division operator: 7.6. Expressions (sed & awk)
    4.4.1. Operators (Unix in a Nutshell)
    5.4.1.2. Arithmetic operators (Unix in a Nutshell)
    11.5. Operators (Unix in a Nutshell)
  in ed commands: 2.1. Awk, by Sed and Grep, out of Ed (sed & awk)
  in filenames: 1.11. Filenames (Unix Power Tools)
    1.13. Wildcards (Unix Power Tools)
  in pathnames: 1.16. Making Pathnames (Unix Power Tools)
    31.2. Using Relative and Absolute Pathnames (Unix Power Tools)
    tar archives and: 38.6.1. Restoring a Few Files (Unix Power Tools)
    wildcard matching across: 38.10.2. With GNU tar (Unix Power Tools)
  IRC, using: 6.7.2.1. Introducing IRC (Learning Unix)
  ls command and: 3.1.8. Listing Files with ls (Learning Unix)
  pathname separator: 1.1.1. Opening a File (Learning the vi Editor)
  pathnames and: 3.1.4. Absolute Pathnames (Learning Unix)
  pattern addressing: 2.1. Awk, by Sed and Grep, out of Ed (sed & awk)
    A.2.1. Pattern Addressing (sed & awk)
  referring to marks (vile): 12.8.7. Visual Mode (Learning the vi Editor)
  root directories and: 3.1.3. The Directory Tree (Learning Unix)
    3.1.4. Absolute Pathnames (Learning Unix)
  search command: 1. The vi Text Editor (Learning the vi Editor)
    3.3. Movement by Searches (Learning the vi Editor)
    opening files at specific place: 4.2.1. Advancing to a Specific Place (Learning the vi Editor)
  search patterns in vi editor, delimiting: 17.8. Using Search Patterns and Global Commands (Unix Power Tools)
  /= (assignment) operator: 7.6. Expressions (sed & awk)
  // as delimiter: 2.1. Awk, by Sed and Grep, out of Ed (sed & awk)
    5.3. Substitution (sed & awk)
  /= assignment operator: 4.4.1. Operators (Unix in a Nutshell)
    5.4.1.1. Assignment operators (Unix in a Nutshell)
    11.5. Operators (Unix in a Nutshell)
~ (tilde): 1.6.1.2. Tilde notation (Learning the Korn Shell)
  7.3.2. Substitution Order (Learning the Korn Shell)
  (see also tilde notation)
  as bitwise operator: 6.2. Numeric Variables and Arithmetic (Learning the Korn Shell)
  as command: 2.4.7. Miscellaneous Commands (Learning the Korn Shell)
_ (underscore)
  ASCII class for: 5.14. Defining What Makes Up a Word for Selection Purposes (Unix Power Tools)
  in filenames: 1.11. Filenames (Unix Power Tools)
_ underscore, as command: 2.4.7. Miscellaneous Commands (Learning the Korn Shell)

### Numbers

0 command: 2.4.1. Simple Control Mode Commands (Learning the Korn Shell)
0 (move cursor) command: 2.2.3. Movement Within a Line (Learning the vi Editor)
  3.1.5.1. Movement on the current line (Learning the vi Editor)
:0 (zero) operator, in history substitutions: 30.8. History Substitutions (Unix Power Tools)
0 (zero) process ID: 24.14. Killing All Your Processes (Unix Power Tools)
-1 processID: 24.14. Killing All Your Processes (Unix Power Tools)
\1, \2, ... metacharacters: 6.3.3. Metacharacters Used in Replacement Strings (Learning the vi Editor)
  11.7. Extended Regular Expressions (Learning the vi Editor)

Symbols & Numbers | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

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